18033473345 has 4 divisors (see below), whose sum is σ = 21640168020. Its totient is φ = 14426778672.

The previous prime is 18033473323. The next prime is 18033473383. The reversal of 18033473345 is 54337433081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2209846081 + 15823627264 = 47009^2 + 125792^2 .

It is a cyclic number.

It is not a de Polignac number, because 18033473345 - 2²⁸ = 17765037889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803347330 + ... + 1803347339.

It is an arithmetic number, because the mean of its divisors is an integer number (5410042005).

Almost surely, 2^18033473345 is an apocalyptic number.

It is an amenable number.

18033473345 is a deficient number, since it is larger than the sum of its proper divisors (3606694675).

18033473345 is an equidigital number, since it uses as much as digits as its factorization.

18033473345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606694674.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 18033473345 in words is "eighteen billion, thirty-three million, four hundred seventy-three thousand, three hundred forty-five".